Abstract: A radiation imaging apparatus includes a radiation detection unit including a scintillator for converting radiation into light and a photoelectric conversion element for converting light into electric charge and configured to generate an image, an acquisition unit configured to acquire a first image generated by the radiation detection unit in a radiation irradiated state and, after that, acquire a second image generated by the radiation detection unit in a radiation non-irradiated state, and an estimation unit configured to estimate presence or absence of bright burn in the scintillator based on the second image.

Abstract: A radiation imaging apparatus comprising an imaging region where conversion elements used for an imaging operation of obtaining a radiation image corresponding to incident radiation are arranged, detecting portions in each of which a detecting element used to detect a radiation dose entering the imaging region is arranged, and a controller is provided. The controller is configured to perform, before the imaging operation, an offset readout operation of reading out offset signals of the detecting elements from the detecting portions, detect, in the imaging operation, the radiation dose entering the imaging region by using signals output from the detecting elements during irradiation with radiation and the offset signals, and be capable of changing, during a period of the offset readout operation, an order of reading out the offset signals from the detecting portions.

Abstract: A radiation imaging apparatus includes a pixel unit including a plurality of pixels and configured to generate image data according to received irradiation of radiation from a radiation generation apparatus, and a control unit configured to acquire irradiation information regarding a radiation irradiation area or an irradiation position of the pixel unit, calculate brightness information of each of successive pieces of image data provided by the pixel unit based on the image data and the irradiation information, generate irradiation condition information of the radiation generation apparatus based on the brightness information, and transmit the irradiation condition information to the radiation generation apparatus. The control unit recalculates the brightness information when a fluctuation of the brightness information exceeds a threshold value.

Abstract: A radiation imaging apparatus comprising an imaging region where conversion elements used for an imaging operation of obtaining a radiation image corresponding to incident radiation are arranged, detecting portions in each of which a detecting element used to detect a radiation dose entering the imaging region is arranged, and a controller is provided. The controller is configured to perform, before the imaging operation, an offset readout operation of reading out offset signals of the detecting elements from the detecting portions, detect, in the imaging operation, the radiation dose entering the imaging region by using signals output from the detecting elements during irradiation with radiation and the offset signals, and be capable of changing, during a period of the offset readout operation, an order of reading out the offset signals from the detecting portions.